Original Research

Studies in the genus Riccia (Marchantiales) from southern Africa. 6. R. hirsuta, a new species, in a new section

O. H. Volk, S. M. Perold
Bothalia | Vol 16, No 2 | a1086 | DOI: https://doi.org/10.4102/abc.v16i2.1086 | © 1986 O. H. Volk, S. M. Perold | This work is licensed under CC Attribution 4.0
Submitted: 23 October 1986 | Published: 28 October 1986

About the author(s)

O. H. Volk, Botanische Anstalten d. Univ., Germany
S. M. Perold, Botanical Research Institute, Department of Agriculture and Water Supply, South Africa

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Abstract

Riccia hirsuta Volk & Perold, sp. nov., the type species of a new section,  Micantes Volk & Perold, subgenus Spongodes (Nees) Volk is described. It is characterized by tall, dorsal, hair-like, multi-cellular outgrowths from an epidermis with distant air-pores, leading to polyhedral air-chambers below, and is the only species in this subgenus with these outgrowths. The ventral scales are triangular, apically splitting into long, hair-like appendages. This species is endemic to the north-west and central Cape Province.


Keywords

anatomy; Marchantiales; Micantes sectio nova. <i>Riccia hirsuta</i>; species nova; southern Africa; taxonomy

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